SC16C654BIB64 PHILIPS [NXP Semiconductors], SC16C654BIB64 Datasheet - Page 24

• Manufacturer Part Number: SC16C654BIB64
• Description: 5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.), with 64-byte FIFOs and infrared (IrDA) encoder/decoder
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
7. Register descriptions
Table 8:
[1]
[2]
[3]
[4]
[5]
[6]
9397 750 14965
Product data sheet
A2 A1 A0 Register Default
General Register Set
0
0
0
0
0
0
1
1
1
1
Special Register Set
0
0
Enhanced Register Set
0
1
1
1
1
The value shown represents the register’s initialized HEX value; X = not applicable.
These registers are accessible only when LCR[7] = 0.
These bits are only accessible when EFR[4] is set.
This function is not supported in the HVQFN48 package; TXRDY and RXRDY are removed.
The Special Register set is accessible only when LCR[7] is set to a logic 1.
Enhanced Feature Register, Xon1/Xon2 and Xoff1/Xoff2 are accessible only when LCR is set to ‘BFh’.
0
0
0
1
1
1
0
0
1
1
0
0
1
0
0
1
1
0
0
1
0
0
1
0
1
0
1
0
1
0
0
1
0
1
SC16C654B/654DB internal registers
RHR
THR
IER
FCR
ISR
LCR
MCR
LSR
MSR
SPR
DLL
DLM
EFR
Xon-1
Xon-2
Xoff-1
Xoff-2
[5]
[2]
XX
XX
00
00
01
00
00
60
X0
FF
XX
XX
00
00
00
00
00
Table 8
The assigned bit functions are more fully defined in
[6]
[1]
details the assigned bit functions for the SC16C654B/654DB internal registers.
Bit 7
bit 7
bit 7
CTS
interrupt
[3]
RCVR
trigger
(MSB)
FIFOs
enabled
divisor
latch
enable
Clock
select
FIFO
data
error
CD
bit 7
bit 7
bit 15
Auto
CTS
bit 7
bit 15
bit 7
bit 15
[3]
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
Bit 6
bit 6
bit 6
RTS
interrupt
[3]
RCVR
trigger
(LSB)
FIFOs
enabled
set
break
IR
enable
trans.
empty
RI
bit 6
bit 6
bit 14
Auto
RTS
bit 6
bit 14
bit 6
bit 14
Rev. 02 — 20 June 2005
[3]
Bit 5
bit 5
bit 5
Xoff
interrupt
TX
trigger
(MSB)
INT
priority
bit 4
set parity even
Xon
Any
trans.
holding
empty
DSR
bit 5
bit 5
bit 13
Special
char.
select
bit 5
bit 13
bit 5
bit 13
[3]
[3]
[3]
Bit 4
bit 4
bit 4
Sleep
mode
TX trigger
(LSB)
INT
priority
bit 3
parity
loop back OP2, INTx
break
interrupt
CTS
bit 4
bit 4
bit 12
Enable
IER[4:7],
ISR[4:5],
FCR[4:5],
MCR[5:7]
bit 4
bit 12
bit 4
bit 12
[3]
[3]
SC16C654B/654DB
Bit 3
bit 3
bit 3
modem
status
interrupt
DMA
mode
select
INT
priority
bit 2
parity
enable
enable
framing
error
bit 3
bit 3
bit 11
Cont-3 Tx,
Rx Control
bit 3
bit 11
bit 3
bit 11
CD
Section 7.1
[4]
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Bit 2
bit 2
bit 2
receive
line status
interrupt
XMIT
FIFO reset
INT
priority
bit 1
stop bits
OP1
parity
error
bit 2
bit 2
bit 10
Cont-2 Tx,
Rx Control
bit 2
bit 10
bit 2
bit 10
RI
through
Bit 1
bit 1
bit 1
transmit
holding
register
RCVR
FIFO
reset
INT
priority
bit 0
word
length
bit 1
RTS
overrun
error
bit 1
bit 1
bit 9
Cont-1
Tx, Rx
Control
bit 1
bit 9
bit 1
bit 9
Section
DSR
7.11.
Bit 0
bit 0
bit 0
receive
holding
register
FIFO
enable
INT
status
word
length
bit 0
DTR
receive
data
ready
bit 0
bit 0
bit 8
Cont-0
Tx, Rx
Control
bit 0
bit 8
bit 0
bit 8
CTS
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